Doom

The Intel Core Ultra 7 155H paired with the NVIDIA GeForce RTX 5080 delivers a compelling 1080p and 1440p experience in Doom, though 4K performance reveals the expected ceiling for this first-person shooter’s demanding settings. The data shows a system that obliterates high-refresh-rate 1080p monitors, remains highly capable at 1440p, and only starts to show strain at 4K with the most demanding presets. This combination ranks in the 27th percentile of all tested combos, placing it ahead of roughly 73% of the field, which aligns with the GPU’s strong but not top-tier standing among all tested graphics cards.

Resolution Scaling

The FPS drop from 1080p to 4K is steep and consistent across all settings, indicating that the RTX 5080 is the primary scaling bottleneck as resolution increases. At Low settings, the average frame rate falls from 309 FPS at 1920x1080 to 200 FPS at 2560x1440, a reduction of 109 FPS (or roughly 35%). Moving to 3840x2160, the average drops further to 108 FPS, which is a 65% decrease from the 1080p figure. This dramatic scaling pattern is typical of a GPU-bound scenario where pixel throughput becomes the limiting factor.

For Medium settings, the same pattern emerges: 269 FPS at 1080p, 174 FPS at 1440p, and 94 FPS at 4K. The percentage drop from 1080p to 4K is 65%, nearly identical to the Low preset. High settings show a slightly different trajectory, with 227 FPS at 1080p, 147 FPS at 1440p, and 80 FPS at 4K—here, the 4K figure represents a 65% reduction from the 1080p baseline as well. Ultra settings follow suit, with 186 FPS at 1080p, 120 FPS at 1440p, and 65 FPS at 4K, a 65% drop from 1080p.

This consistent ~65% reduction across all presets strongly suggests that resolution scaling is uniform and that the CPU is not introducing a variable bottleneck at lower resolutions. The RTX 5080’s raw pixel throughput is the determining factor, and the data indicates that 4K is the point where the GPU’s workload becomes prohibitive for maintaining high refresh rates. At 1440p, the system still delivers well above 120 FPS on all presets, making it a sweet spot for high-refresh-rate gaming. The 1080p results are exceptionally high, with even Ultra settings exceeding 180 FPS, which points to a system that is entirely GPU-limited at that resolution, with the CPU having ample headroom.

GPU Role

The NVIDIA GeForce RTX 5080 is the clear driver of these results, and its specifications explain the observed scaling. The GPU features 16 GB of GDDR7 memory on a 256-bit bus, delivering a bandwidth of 960.0 GB/s. This memory configuration is more than sufficient for Doom, which is not known for extreme VRAM consumption, but the bandwidth is crucial for maintaining high frame rates at 4K. The boost clock of 2617 MHz, paired with 10752 shading units, provides the compute throughput needed for the game’s rendering tasks.

The GPU’s benchmark scores reinforce its performance tier. The 3DMark Steel Nomad DX12 score of 8637 and the Passmark G3D score of 36565 place it in the 87th percentile of all GPUs. Its nearest rivals in the benchmark database are the AMD Radeon 8060S (0.6% faster), the AMD Radeon RX 6750 GRE 12 GB (0.7% faster), and the AMD Radeon Pro W5700X (2.3% faster), while the AMD Radeon RX 9070 GRE is 2.2% slower. This clustering indicates that the RTX 5080 is competitive with a group of high-end cards, and the Doom results reflect that—it is not the absolute fastest, but it is within a few percentage points of its closest peers.

In Doom specifically, the GPU’s role is most evident in the 4K Ultra preset, where the average FPS falls to 65. This is the only setting/resolution combination that dips below the 80 FPS threshold, and it highlights that the RTX 5080’s architecture, while powerful, is not sufficient to brute-force the game’s most demanding settings at 4K. The 16 GB VRAM is not a limiting factor here, as Doom’s texture requirements are well within that capacity, but the raw shading and texture rate are what cap performance. The GPU’s 879.3 GTexel/s texture rate and 293.1 GPixel/s pixel rate are the specifications that directly impact the 4K scaling seen in the data.

How This Combo Ranks

The combination of the Intel Core Ultra 7 155H and the RTX 5080 achieves a combo rank of 1006 out of 3712 tested combinations in Doom. This places it in the 27th percentile of all tested combos, meaning it outperforms 73% of the systems in the database for this specific game. The rank is notable because the CPU is a mobile part with a 28 W TDP, which would typically be associated with laptops, while the GPU is a desktop-class card with a 360 W TDP. This pairing is unusual, but the data shows that the CPU’s 16 cores and 22 threads are sufficient to feed the GPU in Doom.

The combo’s percentile ranking is slightly below the GPU’s individual percentile of 87, which suggests that the CPU might be holding back the GPU in some scenarios, particularly at lower resolutions where frame rates are extremely high. At 1080p Low, the 309 FPS average is achieved, and it is plausible that a stronger desktop CPU could push that number higher, but the data does not show a CPU bottleneck at the tested settings. The combo rank of 1006 indicates that there are 1005 other combinations that perform better, but given the mobile CPU’s thermal and power constraints, this is a strong result.

In the context of the nearest rival combos, the CPU’s benchmark scores are closely matched with the Intel Core i5-14600T (0% delta), the AMD Ryzen AI 7 PRO 360 (0.1% faster), and the AMD Ryzen 5 7400F (0.2% slower). This means that swapping the Core Ultra 7 155H for any of these CPUs would likely produce nearly identical Doom performance, as the GPU would remain the limiting factor. The combo’s rank is therefore more a reflection of the GPU’s capabilities than the CPU’s, and the data supports the conclusion that this pairing is well-balanced for Doom’s engine.

Measured FPS Breakdown

At 1920x1080, the system delivers exceptional performance across all presets. The Low preset averages 309 FPS, which is the highest measured result in the entire dataset. Medium settings reduce the average to 269 FPS, with a minimum of 229 FPS and a maximum of 310 FPS, indicating excellent frame pacing. High settings average 227 FPS, while Ultra settings average 186 FPS. All of these results are well above the 144 Hz refresh rate common on modern monitors, making the system overkill for 1080p gaming.

Moving to 2560x1440, the performance remains strong but shows the expected drop. Low settings average 200 FPS, which is still very high. Medium settings average 174 FPS, with a minimum of 148 FPS and a maximum of 200 FPS, providing a smooth experience for high-refresh-rate 1440p monitors. High settings average 147 FPS, which is suitable for a 144 Hz display. Ultra settings average 120 FPS, which is still playable on a 120 Hz monitor but begins to show the GPU’s limits. The 1440p results indicate that this is the resolution where the system can fully utilize high-refresh-rate displays without compromising on settings.

At 3840x2160, the performance drops significantly. Low settings average 108 FPS, which is playable but not ideal for competitive play. Medium settings average 94 FPS, with a minimum of 80 FPS and a maximum of 109 FPS, suggesting some frame drops below the 90 FPS threshold. High settings average 80 FPS, which is just at the edge of smoothness for many players. Ultra settings average 65 FPS, which is the only result below 60 FPS and indicates that this preset is not recommended for 4K gaming. The data clearly shows that 4K is the resolution where the RTX 5080’s performance becomes a limiting factor, and users should adjust settings or resolution accordingly.

Settings Recommendations

For the best experience per the measured rows, the High preset at 2560x1440 is the optimal balance of visual quality and performance. The average FPS of 147 is sufficient for a 144 Hz monitor, and the visual fidelity is significantly better than Low or Medium. At 1920x1080, the Ultra preset is the best choice, as the 186 FPS average is high enough to take advantage of any monitor, and the visual quality is maximized. The data shows that at 1080p, even the most demanding preset does not compromise the experience.

For 4K gaming, the Low preset is the only viable option for those prioritizing frame rate, with an average of 108 FPS. Medium settings at 4K average 94 FPS, but the minimum of 80 FPS suggests occasional dips that could be noticeable. The High preset at 4K averages 80 FPS, which is borderline, and the Ultra preset is not recommended due to the 65 FPS average. The measured data indicates that 4K users should either use the Low preset or consider a lower resolution for a smoother experience.

For users with a 240 Hz monitor, the 1080p Medium preset is the recommended choice, as the 269 FPS average is closer to the monitor’s refresh rate than the Low preset’s 309 FPS, while providing better visuals. At 1440p, the Medium preset’s 174 FPS average is ideal for a 165 Hz monitor, offering a good balance between visual quality and performance. The High preset at 1440p is also acceptable for 144 Hz displays, but the Medium preset provides a higher frame rate for competitive play.

CPU Role

The Intel Core Ultra 7 155H is a mobile processor with 16 cores and 22 threads, based on the Meteor Lake architecture. Its base clock of 3.80 GHz and boost clock of 4.80 GHz are respectable for a 28 W TDP part, and the 24 MB of shared L3 cache helps with gaming workloads. The CPU’s benchmark scores show that it is a capable processor, with a Cinebench R23 multicore score of 15028 and a single-core score of 1743. Its Passmark single-thread score of 3468 and multithread score of 24873 place it in the 83rd percentile of all CPUs.

In Doom, the CPU’s role is to feed the GPU with draw calls and game logic, and the data shows that it is not a bottleneck at most tested settings. At 1080p Low, the 309 FPS average is a strong indicator that the CPU can keep up with the GPU’s frame generation at lower resolutions. The CPU’s nearest rivals in the benchmark database are the Intel Core i5-14600T (0% delta) and the AMD Ryzen AI 7 PRO 360 (0.1% faster), which are desktop and mobile parts respectively. This clustering suggests that the Core Ultra 7 155H is competitive with other mid-range processors, and its performance in Doom is consistent with its benchmark scores.

The CPU’s 28 W TDP is a notable constraint, as it is a mobile part designed for laptops, yet it is paired with a desktop GPU that has a 360 W TDP. This power disparity could theoretically cause thermal throttling in a laptop chassis, but the measured data does not indicate any such issues. The CPU’s 16 cores and 22 threads provide ample parallelism for Doom’s engine, which is not heavily multithreaded but benefits from having multiple cores available for background tasks. The CPU’s integrated graphics, Arc Xe-LPG 128EU, are not used in this configuration, but their presence does not impact the discrete GPU’s performance.

The data indicates that the CPU is sufficient for this GPU in Doom, but it is not the primary driver of the results. The combo rank of 1006 out of 3712 is more heavily influenced by the GPU’s capabilities, and the CPU’s role is to avoid being a limiting factor. At 4K Ultra, where the GPU is clearly the bottleneck, the CPU’s performance is irrelevant, as the frame rate is capped by the GPU’s pixel throughput. This suggests that users could potentially pair this CPU with an even more powerful GPU and see similar results in Doom, as long as the CPU can maintain its frame delivery rate.